The previous article introduced the energy efficiency grade standard of low temperature air source heat pump, and detailed the water outlet temperature and load performance coefficient of each class. In addition to the energy efficiency level, what are the requirements for low-temperature air source heat pump unit technology? Today, the editor has sorted out the following five points for you. After reading, I hope you can have a deeper understanding of air source heat pump.

1. If the energy efficiency of low-temperature air source heat pump unit is level 3, its heating performance coefficient and comprehensive partial load performance coefficient shall reach the specified value at the same time.

2. The products with electric auxiliary heating can realize the manual opening and closing of the electric auxiliary heating system, and a device to display the working status of the electric auxiliary heating system should be installed in a visible position. At the same time, when the dry bulb temperature outside the room is lower than - 20 ℃, the electric auxiliary heating system is allowed to start when the electric auxiliary heating is on; The electric auxiliary heating is selected by the user, but the controller reserves the interface. The start and stop of the auxiliary electric heating system is controlled by the unit. The opening and closing methods of the auxiliary electric heating should be described in the instructions (or operation manual).

3. The product shall indicate the heating capacity and COP (h, - 20 ℃) value under the condition of dry bulb temperature - 20 ℃ outside the room.

4. The marked value of energy efficiency of low temperature heat pump unit shall be within the range corresponding to its rated energy efficiency grade. For products with energy efficiency grade 1, the measured value of energy efficiency shall not be less than 95% of the standard value.

5. The nominal heating capacity marked on the low-temperature heat pump unit shall not be less than 95% of the rated heating capacity or nominal heating capacity marked on the unit under the condition of full load and rated outlet water temperature according to the specified value.

The STS commercial low temperature air source heat pump module unit independently developed and produced by Kcalin New Energy. The refrigeration energy efficiency value of this series of air source heat pump units under standard conditions in summer is higher than China's first-level energy efficiency standard (3.4), and the energy efficiency ratio (IPLV) value of heating in winter is 20% higher than China's first-level energy efficiency standard (3.0); With its low attenuation rate, wide applicability, stability and energy saving, it has been unanimously recognized by the majority of users.